Electric motor frame



Nov. 30 1926.

R. E. JACOBS ELECTRIC MOTOR FRAME Filed August 14, 1924 2 Sheets-Sheet 1 I l 1 J R.E. JADUBS 3 ATTYE Nov. 30 1926.

' R. E. JACOBS 1,608,697

ELECTRIC MOTOR FRAME H Filed August 14. 1924 2 Sheets-Sheet i? n o o o E v 3 5; \\Q\ I g I I INVENTUR RLJADDBS ATfYs Patented Nov. 30, 1926.

UNITED STATES FATE.

REED E. JACOBS, OF SAN FRANCISCO, CALIFORNIA.

ELECTRIC MOTOR FRAME.

Application filed August 14, 1924.

The present invention relates to improvements in electric motor frames and has particular reference to the mounting means for the motor of a motor driven vehicle such as an electric locomotive or a street railway car.

It is particularly proposed in the present invention to construct the motor in such a manner that it is permanently built into the frame supporting the same whereby any shifting of the motor or any dislocation of any part thereof becomes impossible. It is further proposed to construct the motor in such a manner that elevating means such as F a jack mounted on a small truck maybe brought into operative proximity with the armature while the same is within the motor and may be made to take the weight of the armature, allowing the bearings for the armature to be removed and allowing furthermore the entire armature to be removed from the motor housing by axial motion without disturbing the motor housing. It is further proposed to provide removable bearings for the armature shaft, the bearings comprising two co-acting elements adapted to be separated so as to clear the way when it is desired to remove the armature by axial motion. It is further proposed to arrange a drive shaft in alignment with the two armature shafts of the two motors whereby a better balance is obtained than is possible with the present arrangements. Further objects and advantages of my device will appear as the specification proceeds.

The preferred form of my invention is illustrated in the accompanying drawings in which Figure 1 shows a longitudinal section through my device taken along line 11 of Figure 3, Figure 2 asecond section taken along line 22 of Figure 8, Figure 3 a bottom plan View of same, Figure 4 an enlarged detail view illustrating the attaching means for a removable section, Figure 5 a vertical transverse section taken along line 5-5 of Figure 3, Figure 6 a detail view explaining the operation of removing. the armature by means of a jack mounted on a track, and Figure 7 an assembly view showing my motor arrangement in connection with an electric locomotive. While I have shown only the preferred form of the invention it should be understood that various changes or modifications may be made within the scope of the claims hereto attached Serial No. 732,094.

without departing from the spirit of the invention.

In the preferred form of my invention two spaced elements such as the plates 1 form an integral part of the frame of the locomotive 2, and are supported on axles 3 by means of suitable brackets 4:. The two plates are disposed parallel to one another and are spaced by tubular members 6, which latter are openended and are welded or otherwise permanently fastened to the two plates 1, which atter present openings corresponding to the size of the tubes so that the same are accessible from the outside throughout the dimensions thereof. The tubes, of which two are shown in Figure 1, form the motor housings and each of them has a plurality of pole pieces 7 permanently secured thereto in peripheral arrangement. The armature 8 in each hous ng is supported in bearings 9 which latter are split vertically, the two halves being supported on two sliding elements 11, which latter present horizontal upper and lower flanges 12, riding in channels 13 formed by upper and lower flanges of the two plates 1. When the two slides 11 are moved together and fastened in place by means of bolts 14, the bearings 9 are in an operative position to co-operate in supporting the armature. The slides 11 may, how ever, after the bolts 14 have been removed, be slid apart whereby the armature is not only left without support but whereby the ends of the tubes are cleared to allow the arnature to be removed from the housing by axial motion.

One of the principal features of my in vention is the providing of means for portably supporting the armature while the same is in the cage or the housing independently of the bearings so that the latter may beremoved without causing the armature to change its position. This means comprises a small truck 16 adapted to be pushed underneath the car having one or more jacks 17 of any suitable construction mounted thereon, and a removable section 18 in the motor housings which when removed provides a slot 19 in the bottom of the motor housings, allowing the jack 17 to pass therethrough into operative relation relative to the armature so that when the jack is slightly raised by any suitable means it will take the weight of the armature and support the same indemndently the bearings. It will be seen .1 whereupon the jack 17 may be raised to take that in this manner, after the, section 18 has been removed from the housing, the truclrlG may be pushed underneath the locomotive with the jaclrl'? passing through the slot 19 the weight of the armature, thereby allowing the two sliding elements 11 to :be slidxapart without affecting the position of the arma- .1.tur.e. After the slides11= have been moved my out of the way the truck 16 may be pulled suitable means should forward and the. entire armature-maybe removed with the truck by axlal motion, there- ;by not.-only rendering the, armature itself -readily accessible for repair work but also the housing and .all the individual parts;

2 thereof.

. It will benot-iced that the section 18 may be used' to support oneof' the pole pieces as shown .in' Figure 1, in which latter case be employed for read- I ilyestabllshing connection between the wmdings of the pole piece, held bythe section and. the'windings. on the other pole pieces.

A convenient-way of establishing th-econinection 'is shown in detail in Figure; 4, in

which; an'insulating bushing is illustrated as extending through the removable section 18; and a flange 22 of the pole piece 23. A

contact. 24 is mounted on the bushing and connected to the wire 26 of thepole piece.

Y through thev bushing and threadedly engag- .Asecond contact 27 is mounted on aninsulatingblocl: 28 secured to the non-removable part of the housing and extends over 'theqcontact 24: so that ayscrew. 29 passed ing the two contacts 24 and 27 may draw the same together. The contact, 27 is con- .nected with the windings of the adjacent pole pieces 37 through the wirc.82. Two of these contact-1 arrangements are necessary to connect the windings of the removable pole piece. to the windings ofth-e two adjacent pole pieces. The two slides 11 may not be made sufiiciently wide to cover. the entire opening of the tubes,-and.fillers; 33, of -some light materialimayzbeused to completely close thewends of the tubes.

. NYithin thespace enclosed byt-he two. chan- .1 nels:13 I providethe pinions 34': which mesh with ,therlarge gear wheels36 mounted on.

ztheshaft- 37 which latter is disposed in alignment with .the two; armature shafts 38 and 39. i The shaft 37 may beremovably secured 'tO theihubs 141 of the gear wheels 36 I: by means of: bolts A2. Acover plate 43 may vlJB secured as shownaat' 4:41) 'coverthe space within thechannels 13, asui-ta'ble opening 47 =:be ng-provided in the coverplates to "allow of revolving motionof the-studls mounted eccentrically on the gear. wheels 36 and suit- 2 ably connected with the .wheels 49 of the locomotives through connectingrods 57 Theadvantages ofrmy invention will be readily understood from the foregoing descri tion: The consist in reater stren th and rigidity of. the entire unit; in greater accessibility of all parts of the machine for removal and replacement, including the pole pieces, armature-and the gears; in greater power capacity, due to the fact that fields and armatures may be made wider in this arrangement. than would ordinarily be possible, and finally in an equal distribution of --st-rains, .due to: the fact that all. shafts are mounted in: a straight line.

I claim:

l 1. In combination,a motorframe having pole pieces arranged j therein, a revolvable armature and removable means for supportingthe; armature in operative relation to the pole pieces said frame being formed with an. axial slot to allow the insertion of independent means adapted, for supporting the armature and moving the same axially from the framenpon removal of the first named supporting means.

2.. In combination, a motorffliame having 5 pole. pieces arranged therein ,and arevolvable armature supported in operative relationv to the; pole pieces, the frame being formed withan aXialopen-ended ,slot' to allow the insertion of independent, means adapted for supporting thearmature and .t-wo. spaced plates,xeach having an opening therein; an open-ended, tubular member connecting the plates and registeringwith said openings; pole pieces arranged circumferventially ,in- :the tubular member; arevolv able armaturezin the tubular member; and

-.removable., means supported by the plates "-providingbearings for, the armature.

6..,Inv combination, 1 aframe comprising two spaced parallel plates, an open-ended tubular member connecting the same and formed integral therewith, pole pieces arranged circumferentially in said tubular member, a revolvable armature insaid tubular member,- andsliding elements supported .by .theeplates coacting to provide bearings 1.1 01 the. armature.

. 7 In combination,, a frame comprising two spaced parallel plates, an open-ended tubular member connecting the same and Eco formed integral therewith, pole pieces arranged circumferentially in said tubular member, a revolvable armature in said tubular member, and laterally sliding elements supported by the plates coacting to provide bearings for the armature.

8.111 combination, a frame comprising two spaced parallel plates, an open-ended tubular member connecting the same and formed. integral therewith, pole pieces arranged circumferentially in said tubular member, a revolvable armature in said tubular member, and removable means supported by the plates providing bearings for the armature, the frame being formed to allow independent means to be introduced thereinto for supporting the armature so as to permit the bearing means to be removed.

9. In combination, a frame comprising two spaced parallel plates, two open-ended tubular members connecting the same and formed integral therewith, pole pieces arranged circumferentially in said tubular members, revolvable shafts having armatures thereon in said tubular members, means supported by the plates providing bearings for the armature shafts, a third shaft between the armature shafts and alined therewith, and means for transmitting motion from the armature shaft to the third shaft.

1.0. In an electrically propelled Wheeled vehicle, a carriage, side elements supported in spaced and parallel relation thereon, a tubular member connecting the side elements and formed integral therewith, pole pieces arranged in said tubular member, an armature supported in the tubular member in operative relation to the pole pieces, and means for transn'iitting rotary motion from the armature to the vehicle wheels.

REED E. JACOBS. 

